[root@localhost download]# service mysqld startRedirecting to /bin/systemctl start mysqld.serviceJob for mysqld.service failed because a timeout was exceeded. See "systemctl status mysqld.servic
启动mysql出现问题/etc/init.d/mysqld startMySQL server PID file could not be found![FAILED]Starting MySQL......................................The server quit without updating PID file (/data/mysql/mysql_330